I believe the rooster is single barred, so half of the offspring should be barred with gold leakage, and the other half should be black with gold leakage.
The belly is colored like a silver spangled Hamburg, but those have rose combs and are white skinned, both dominant traits that this rooster doesn't have. So I kind of doubt it has any Hamburg in him.
When different color patterns get mixed up, you can get anything.
He also has abnormally long...
Rouen, Mallard or maybe Golden 300. Dark Khaki Campbell is another possibility.
The best way to tell gender is by voice when ducks are still in juvinile plumage. There are several videos on Youtube that show how to do that. I'll post one, but a search on the site will turn up more options.
At 8 weeks, it's too early for male specific feathering in the tail or anywhere else. So far this one looks to be a pullet, but I would give it more time to be sure.
The first two are males with combs so big and colorful at eight weeks. I'm not sure the third one is female. It may be a slower developing male. Better pictures of that one might help.
1 and 2 are partridge-- they looked black in the previous photos, but in these ones they look right for partridge.
3, 4, 5, 6 probably are white. I'm seeing no blue on the feathers. Time will tell if that develops later-- it would mean they are splash instead of white, if it happens.
7, 8, 9...
4 looks to be a female Faverolles.
3 has no black breast feathers, but the comb is colorful. Mixed signals.
1 and 2 are red colored, look to have yellow legs and maybe pea combs. I don't believe they are pure Faverolles.